Figure 2.

Partitioning variation in mortality. Schematic illustration of how different components of aging can modify adult lifespan, with special reference to the effect of intrinsic and extrinsic mortality. Populations can differ in the rate of aging (i.e., slope of mortality risk increase with age) (A); in the level of baseline (age‐independent) mortality, suggestive of the extrinsic component of mortality (intercept) (B); or a combination of both (C), suggesting that both components of mortality can vary in concert.